How can I see what my timeline looks like to other people?


You can see exactly what your profile looks like to other people by using the View As tool.
Go to your profile and click   (on the right, below your cover).
Click the View As... from the dropdown menu.
You’ll see what your profile looks to the public. To preview how your profile appears to a specific person, such as a friend or coworker, type their name into the open field and press enter.

Note: The View As tool doesn't show whether people can interact on your timeline through posts, likes or comments. Your timeline posts setting will always apply, and anyone who can see a post can like or comment on it.
Source: Facebook.com